Specifically which drivers do you compile in the newest linux 2.6 kernel in order to achieve the best support for the nforce pro 2200, 2050, chipset? The only problem I'm really having is no DMA support for the ide cdroms drives:

But for some reason xcdroast thinks its off, and burning doesn't go over 24x (48x burner), but the rest of the system is not hindered anymore while burning so DMA is definatelly working....
(xcdroast shows: Warning: There is absolutely NO DMA, operations thus are slow.)

I don't have/use xcdroast (k3b does a better job)...
It "could" be a permission problem ... but that's just a wild guess!